Pipe-coupling.



.ernst CHARLES LUKE, OF MILFORD, CONNECTICUT, ASSIGNOR TO NEW HAVEN NOVEL .Y

MACHINE COMPANY, OF NEVI HAVEN, CONlT'C'ilCl'T'l.

PIPE-coupures..

SPECIFICATION forming part'of Letters Patent No. 675,335, dated May 28, 1901.

` pplioation tiled October 30, 1900. Serial N o. 34,876. (No model.)

' To all wwm, it may concern:

Be it known that I, CHARLES LUKE, a citizen of the United States,and a resident of Milvford, county of New Haven, and State of Connecticut, have invented an Improvement in' Pipe-Couplings, of which the 'following description, in connection with the accompanying drawings, is a specication, like letters on the drawings representing like parts.

ling designed more especially for uniting the endls of soft-metal, pipe, such as composed of lear My improved coupling is composed of two parts, one having an inner and the other an external thread, the part having the internal thread presentinga shoulder to support an outturned-iiange at'theend of the pipe, the under side of said iiange being seated on said shoulder by pressure exerted against the outer face of said langebya shoulder at the inner end of the externally-threaded part of the coupling through an outturned flange of a second piece of'pipe surrounded by said externally-threaded portion. j For the best results,the faces of these shouldersare shaped to present an acute-angled corner,over which the pipe-as it is sealed is bent,'or said shoulders may be rearwardly beveled, and the pressure on the under sides of the flanges of the pipeis such as to force the faces of the fiages together with a pressure suiicient to 'makea gas and fluid tight joint, an'dfso also the contact of the shoulders with the under' sidesl of r the-flanges makes a gasiand fluid tight joint,y and the edge ofthe shoulder contacting with the under side of the flange... as the coupling' member is4 rotated .enters and expands the fianges thatvtheir edges'may also make close contact with one -of the coupling members. By the coupling described-it -isr possible to make a gas andfluidtigfhtjointwi-thout'the,-

use of solder 'orpacking.'A 4 y Figure 1 shows two' pieces .ot pipe united ,by my improved coupling. Fig. 2 ius. aA longif tudinal sectionoflthe pipeand coupling shown in Fig. 1-. l

My improyedgcoupling is v.composed of two partsA B, one' threaded internally to engage i 5o externalscrew-thre'ads of the other,v The part A has a shoulder a., preferably-so shapedfj This invention relates to a novel pipe-coup-- formed one against 'the' as to leave a oornerd', the inclination of the shoulder being, as shown, such as t0 present an acute-angled corner. The part .B of the coupling having the external threa d bis ter- 5c' -minated by a shoulder b', preferably'at such au inclination to the inner Wall of the part B as to leave au acute-angled corner b2.

To use my coupling, I slip over the free ends of` the lead pipes C D to be joined the. 6o parts A and B, and by a suitable tool I expand and overturn the ends of each pipe, to thus provide each with a flange, as c d. I may then move the part A on the pipe C :tn-

til the shoulder d contacts with the flange c.v 65.

I may then insert the anged'end d -ot pipe D into the internally-threaded chamber at the outer end of the part A until the fianges contact, or substantially so, and then I engage the externally-threaded end b of the part B 7o with the internal threads of the part Aranci turn, preterably, the part B by means .of a suitable Wrench, causing it to act against the flange d and force its face closely kagainst the face of the flange c, the two faces being other, and the outer sides ofthe flanges being seated against the shoulders, as represented in Fig. 2, the pressure being suiicient, preferably, to cause the vedges of said iiangesto contact with'the in- 8 0` ner wall of the chamber having the internal screw-thread and suicient to force together and flatten the faces of said flanges, so that they make a gas'and fluid tight joint.-

I believe that'I am the .first to make a gas 85 and fluid tight jointl in lead' pi pe by forcing the faces ofthe anges at the meeting ends of thetwo pipes s'o closely together asto mold one flange to another and make an absolutely tight joint.

I oy Viewing Fig.'2, it will'be seen that the space ,between the iunereud of the screw-threaded Aportion of thepart A of the coupling and the shoulder ais smooth or without scnew-threads and thatp'said smooth surface is tapered in- 95 wardly vtoward the said shoulder, and the n surface is of a. length substantially e'qfuad "to 'the' thickness of the two flanges, so that the edges of said flanges are left smooth inthe condition in which they are formed by roo a suitable tool, as stated, before uniting the two parts ofthe coupling. The acting of the corners a and O2 on the lead pipe has a tendency to force the edges of the flan ges'closel y against the inner smooth wall of the part A of the coupling, and by tapering said wall the part A may be slid back on the pipe, if necessity requires, and the flange (l be withdrawn without breaking the saine on the screwthread.

In another application, Serial No. 120,658, filed on the 21st day of December, 1990, I have shown one of the coupling members herein illustrated as employed to couple a lead pipe with a valve or'other exteinally-th'eaded part, a ynut intervening between the valve and the movable member of the coupling.

Having described my invention, what I claim as new, and desire to secure by Letters Patent, is-

l. In a pipe-coupling, aninterx1ally-sciew threaded part having an acute-angled shoulder,an externally-screw-threaded part havin g ashoulder opposed to and coperatin g with the acute-angled shoulder of Rire internallyscrew-threaded part to clamp' etween them the outturned flangesof two metallic pipes and force said flanges together and outward to forma gas and fluid tight joint betweenthe faces of the flanges and also between the edges of said flanges and one of the parts of the coupling. v

2. In a pipe-coupling, Aan internallyfscrewthreaded part having a shoulder piesenting an acute angle, an externally-screw-threaded part having a `shoulder presenting an acute angle and opposed to and coperatingr with the shoulder of the internally-soreW-threaded part to clainp'between them the outturned flanges'of two metallic pipes and force said flanges together and outward against one otv the parts of the coupling@ forni a gas and fluid tight joint between theA faces of the ilanges and also between the edges ot the flanges and one of the part-s of the coupling. A 3. In a pipe-coupling, an externally-threaded part having a shoulder, and internallythreaded part also having a shoulder, the

shoulders'ofdsaid parts beii g acute-angled to l clamp between themand force outwardly the outward-turned flanges 0E two pipes to be joined, the screw-threads on said parts being omitted adjacent the edgesof said flanges to present a smooth surface against which the material at the edges of the flanges may be forced. Y

4. In a pipe-coujjfling, exterior and interior between them the outturned screw-threaded parts cach having a shoulder to clamp between them the ontturnedflan ges of two pipes to be joined, one of said parts having a chamber the walls of which taper inwardly toward the shoulder, to forni a smooth inclined bearing-surface for the edges ot' said flanges, and means to cause said shout ders to clamp said flanges and fluid tight within said coupling.

5. In a pipe-coupling, exterior and interior screw-threaded parts having acute-angled shoulders to clamp between them the outturned flanges of two pipes to be joined, one of said parts having aehainber the walls of which taper inwardly toward the shoulder, to form a smooth inclined bearing-surface for the edges of said flanges, and means to cause said acute-angled shoulders to clamp said flanges gas and fluid tight within said coupling.

(i. In a pipe-coupling, an internally-screw threaded part having an acute-angled shoulder,'and an eXternally-screw-threaded part having an acute-angled shoulder to clamp flanges of two pipes to be j oined,the intern all y-screw-threaded part having the screw-threads omitted adjacent the edges of said flanges lo present a smooth surface against which the edges ot' the flanges may be forced to.for1n a tight joint between the'faces of the flanges and between the edges of the flanges and the wall of thechamber.

7. In a pipe-coupling, an internally-screwthreaded part .having an internal shoulder tapered outwardly to sustain the under side of a flange at the end of a lead pipe, and an externally-threaded member having at its end an outwardly-tapered shoulder to sustain the underside of a flange of a second piece of? pipe, the rotation of said members causing the faces of said flanges to be clamped together gas and fluid tight, the rotation of said parts about the lead pipe in clamping said flanges causing said shoulders traveling over said flanges to'expaand the -same out wardly. f a u In testimony whereof l have signed my name to thisspeciflcatiou in the presence or' two subscribing witnesses.

Cl lAlll'lliS l ,U lili.

Witnesses:

ll. G. THOMPSON,

norton E. limoni.

Correction in 'LettersPatent No. 675,335.

It is hereby certified that in Letters Patent No. 675,335, granted May 28, 1901, upon the application of Charles Luke, of Milford, Connecticut, for animprovement in Pipe-Couplings, an error appears in the printed specification requiring the following correction, viz: In iine 47, page 2, the clause shoulders of said parts,7 should-.read

shoulder on one of scid parts` and that the said Letters Patent should be read with this correction therein that the same' may conform to the record of the ease in the Patent Oce.. l

. Signed, countersigned, and sealed this 11th day of une, A. 11,1901.v

i F. L. CAMPBELL,

- `[SEAL]L Assistant Secretary of the Interior.

vCountersigned F. I. ALLEN,v n v Y Oommssionr of Patents. 

